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High idle in park and nutral, and does not go.
1997 MERCURY COUGAR
High idle in park and nutral, and does not go down while driving when let off throttle until brake is pressrd.
Tuesday, March 26th, 2013 AT 8:47 PM
Look for a vacuum leak and also check the idle air control valve
Wednesday, March 27th, 2013 AT 1:25 AM
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